Carving-machine.



No. 692,977. Patented Fehin, I902. E. T. BRANNAN. V.

CARVING MACHINE.

(Application filed Apr 15. 1901.)

(No Model.)

:mrnonms vzrzns 0a., Pnmoumo" WASHANGTON n. c.

NITED V STAT S PATENT OFFICE.

EMORA THOMAS BRANNAN, OF BALTIMORE, MARYLAND.

CARVlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 692,977, dated February11, 1902.

Application filed April 15, 1901. Serial No. 55,898. (No model.)

To all whom/ it may concern.-

Be it known that I, EMORA. THOMAS BRAN- NAN, of Baltimore, State ofMaryland, have invented a new and useful Improvement inCarving-Machines, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawing, makingpart of this specification.

My invention is an improved carving-machine to mechanically aid in themodeling from life or copying of an object, as a piece of statuary orthe like, and in the production of a work either of the same size orlarger or smaller, as may be desired, than the original or model; and itconsists in the peculiar construction and combination of devices,hereinafter fully set forth, and particularly pointed out in the claims.

The accompanying drawing is an elevation of a modeling or pointingmachine constructed in accordance with my invention.

A Vertically-disposed and vertically-movable shaft 1 is adapted to movein suitable supports 2, which are here shown as brackets attached to apost or standard 3. At the foot of the shaft is a stirrup at, and saidshaft is supported by a cord 5, which passes over direction-sheaves 6.The said cord is attached to a weight 7, which serves to counterbalancethe shaft and its attachments and maintain the shaft in any desiredvertical adjustment. The stirrup has a revoluble member 8, which isadapted to turn axially, and to the said revoluble member is pivotablyattached a mobile bar 9 by a pivot-screw 10, which may be disposed ineither of a series of adjustingopenings 11, with which the mobile bar isprovided. Said mobile bar carries at its ends arms or frames 12 13,which slide therein and are extensible therefrom. The arm or frame 12carries a point 14. The arm or frame 13 is provided with a bearing 15fora revoluble edged cutting-tool 16, which is attached to and rotatedby a flexible shaft 17, which may be driven by power by any suitablemeans. As here shown, said flexible shaft is attached to a shaft 18,which is journaled in bearings 19 on the post 3 and is also journaled ina bearin gin the lower end of a hanger 20, which is supported by atrolley-wheel 21, that runs on a ring 22. The latter is concentric withthe vertical shaft and is supported by any suitable means, being hereshown as supported by a bracket-arm 23, that is attached to post 3.Shaft 18 hasapulley 24. A powerdriven shaft 25 has a pulley 26. Anendless beit 27 connects the said pulleys, and thereby communicatespower to shaft 18 and flexible shaft 17. The latter is here shown asprovided with a fly-wheel 28.

An oscillating bar 29,which is provided with a series ofadjusting'openings 30, is pivoted on the mobile bar 9 by the screw 10,the latter being placed in an appropriate opening 30. Rods 31 connectthe oscillating bar 20 to the frames or arms l2 13. Hence when the point14: is moved to trace the outline of the original, model, or subject thecutting point 16 is correspondingly moved and is caused to impart acorresponding outline to the work, which is supported on a table 32.

Any suitable tracing or cutting point may be attached to the frame orarm 13. The machine is adapted for working in clay, chalk, marble,granite, or other suitable material. The mobile bar being carried by thevertically-movable shaft may be raised and lowered, together with theguiding or tracing and cutting points, and said mobile bar being pivotedon a revoluble member of the stirrup may be manipulated by the operatorto cause the guiding-point,and hence the cutting-point also, to conformto-any outline, however irregular.

Having now described myinvention, what Iclaim as new, and desire tosecure by Letters Patent, is-

1. In a machine of the class described the combination of a movablesupporting element having a revoluble member, a mobile bar pivotallyattached to said revoluble member, extensible elements carried by saidmobile bar at opposite ends thereof and adapted respectively for theattachment thereto of guiding and cutting points, an oscillating bar onsaid mobile bar, and connections between said oscillating bar and saidextensible elements, substantially as described.

2. The combination of avertically-movable counterweighted shaft, arevoluble element carried thereby, a mobile bar pivoted to saidrevoluble element, an oscillating baron said mobile bar, point-carryingelements longitutween said point-car-rying elements and said dinallymovable on said mobile bar and conoscillating bar, substantially asdescribed.

nections between said tool-carrying elements In testimony whereof I haveset my hand,

and said oscillating bar, substantially as dethis 11th day of April, A.D. 1901, in the pi'es- 5 scribed. ence of two attesting witnesses.

3. In combination with a movable support, T a mobile bar universallyjointed thereto, an EMORA THOMAS BRANNAL oscillating bar pivoted to andadj nstable on Witnesses: said mobile bar, tool-carrying elements car-J. MORRIS OREM, 10 vied by said mobile bar, and connections bel W.DEVRIES GooDWIN.

